As a third-party testing institution collectively owned research institute, Baijian.com Analysis and Testing Center can conduct pre tension testing projects such as anchor rods, anchor cables, bolts, screws, sleeve joints, fasteners, ball screws, etc. according to the pre tension testing standards. Having the national high-tech enterprise certificate and CMA testing qualification certificate, with complete testing instruments, the testing report can be issued within 7-15 days Detection scope: anchor rods, cables, bolts, screws, sleeve joints, fasteners, ball screws, etc Testing items include pre tightening force testing, pre tightening force loosening testing, etc Testing Standards

JB/T 13814-2020 Test Specification for Dynamic Pre tightening Torque of Ball Screw Pairs

JB/T 13818-2020 Dynamic Measurement and Evaluation Method for Pre tightening and Trailing Force of Rolling Linear Guideway Pairs

GB/T 13807.1-2008 Classification of Lumbar Rod Screw Connection Pairs

GB/T 13807.2-2008 Lumbar Rod Screw Connection Pairs

GB/T 13807.3-2008 Lumbar Rod Screw Connection Pairs Nut and Stress Sleeve

1 The testing report of Baijian.com provides research data for relevant scientific research papers 2. Used for product quality control and improving product costs 3. The testing report can be used for product import and export services 4. Based on the data information in the testing report, identify problems with the product, improve product quality, and reduce product costs 5. It can give the product an advantage in sales and provide scientific and reliable product data 6. Assist the public security, procuratorial and legal departments in conducting relevant quality or ingredient testing Testing advantages: 1. Baijian.com mainly focuses on inspection, testing, testing, analysis, and testing, with rich experience and a wide range of services. 2. We have multiple laboratory branches and can quickly respond to customer needs in various places 3. The testing team has complete testing instruments and can conduct multi-dimensional testing on samples 4. All experiments attach great importance to protecting the privacy of customers and sign confidentiality agreements for testing data 5. Short detection time, low cost, scientific reliability, and accurate data 6. Support customers to send samples for testing, as well as engineers to conduct on-site sampling or sampling Testing process: 1. Baijian.com receives a customer's commission 2. Customers send samples or engineers take samples 3. Engineers provide quotations for samples through initial inspection and evaluation 4. Both parties shall communicate specific testing items, sign a confidentiality agreement, and conduct testing tests 5. Communicate and exchange ideas with each other during the experiment to adjust the experiment at any time Complete the experimental testing within 6-15 working days 7. Provide a sample testing report The above is an introduction to the pre tension testing service